Batteries of coke ovens



United States Patent 3,544,429 BATTERIES 0F COKE OVENS NikolaiKonstantinovich Kulakov, Kharkov, U.S.S.R., as-

signor to Gosudarstvenny Vsesojuzny Institut po ProektirovanijuPredpriaty Koksokhimicheskoi Promyshlennosti, Kharkov, U.S.S.R.

Filed Dec. 18, 1967, Ser. No. 691,423 Claims priority, applicationU.S.S.R., Dec. 17, 1966, 1,117,027 Int. Cl. Cb 5/02 US. Cl. 202-139 1Claim ABSTRACT OF THE DISCLOSURE A battery of coke ovens comprises aplurality of horizontal coking chambers having hollow firing membersdisposed on both sides thereof, and provided with vertical firingchambers arranged in pairs by means of separating partitions withcommunicating doors at the top and bottom thereof and additional hollowpartitions separating each pair of channels from an adjacent pair. Thefiring channels in a pair operate alternatively as firing and exhaustchannels respectively. The hollow partitions are provided with twovertical recirculating channels with openings at the top and bottomthereof, one of the recirculation channels being in communication with avertical firing channel of one adjacent pair, while the other verticalrecirculation channel is in communication with a vertical firing channelof the adjacent pair.

The present invention relates to batteries of coke ovens, consisting ofhorizontal coke ovens.

Known in the prior art are coke-oven batteries, composed of a pluralityof horizontal coking chambers, on both sides of which are disposedfiring hollow members with chamberswherein a gaseous fuel is burnt.Provided in the chambers of the firing hollow members are parti tionsconnected in pairs by doors in the top and bottom portions of saidpartitions. Each pair of the firing channels is separated from anotherpair by an additional partition. Horizontal coke ovens of suchconstruction are known as Koppers ovens.

The doors in the lower portion of the partitions are intended foreffecting the recirculation of products of combustion in the firinghollow members with a view to elongating the flame so as to obtain auniform heating of the coke burden in the chamber. Hence, a uniform heating of the coke burden can be obtained when the coking chamber is up to5 m. high. The existing method of recirculation is unsuitable for thecoke ovens having a coking chamber above 5 m. high.

Attempts have been also made for elongating the flame, using steppedsupply of air through channels, disposed in separating partitions of thefiring hollow members, or a supply of gas into vertical firing channelsat various vertical levels, as in the case of the Otto furnaces.

In this case, the distribution of air as to the height of the firingchannels is uncontrollable. Besides, an incomplete combustion constantlyoccurs throughout the height of the vertical firing channel, whichconsiderably reduces the radiation capacity of the flame. For thesereasons, the existing engineering solutions are considered to beinsufliciently effective for coke ovens having the coking chamber above5 m. high.

Also known are coke ovens with recirculation of the products ofcombustion along the channels in each partition of the firing hollowmember, the recirculation channels leading into adjacent firing channelsof the partition (Giprokoks coke ovens of the type IIK-ZK withrecirculation).

These furnaces suffer from, the same disadvantages as those describedabove.

An object of the present invention is to provide, in coke oven batteriesfiring hollow members allowing uniform heating of a coking chamber above5 m. high.

To achieve the object of the invention, a battery of coke ovens isproposed, composed of a plurality of coking chambers, on both sides ofwhich are disposed firing hollow members. These hollow members areprovided with vertical firing channels, connected in pairs to oneanother through doors in the top and bottom portions of separatingpartitions between said channels. Each pair of firing channels isseparated from an adjacent pair by an additional partition. Inconformity with the invention, at least two recirculation channels areprovided in said additional partitions, which emerge into respectivechannels adjacent pairs of the vertical firing channels.

It is desirable that the exit ends of the recirculation channels intothe adjacent pairs of the firing channels be disposed at the top andbottom portions of the firing hollow members.

Hence, the invention is characterized by the well known particularfeatures. However, the adopted engineering solution allows it to effecttwo-sided recirculation of the products of combustion and hence toconsiderably increase the length of the flame and the uniformity ofheating of coking chambers of a greater height (above 5 m.).

The nature of the present invention will become more fully apparent froma consideration of the following description of an exemplary embodimentthereof, taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a longitudinal cross-sectional view of a portion of a batteryof coke ovens according to the invention; and

FIG. 2 is a cross-sectional view taken on the line II H of FIG. 1.

The battery of coke ovens is provided with coking chambers 1 (FIG. 1),on both sides of which are disposed hollow firing hollow members 2. Saidmembers have vertical firing channels 4 divided by partitions 3 (FIG. 2)which intercommunicate in pairs through doors 5 and 6 in the bottom andtop portions of these partitions. In one of the vertical channels 4, thecombustion of gas occurs, while the products of combustion are drawn offthrough another one, the direction of gas flow in the channels varyingin prescribed time intervals.

Fuel gas and air are supplied into vertical firing channels 4, while theproducts of combustion are exhausted therefrom by a device 7, providedwith corresponding gas and air channels.

Each pair of the vertical firing channels 4 is separated from the nextpair by an additional partition 8, in which there are provided tworecirculation channels 9 disposed in parallel with each other.

The recirculation channels 9 are provided at their bottom and topportions with apertures 10, 11 which emerge into adjacent pairs of thevertical firing channels.

When the combustion takes place, for example, in odd vertical channels 4(FIG. 2), part of the products of combustion is sucked off from evenchannels 4 on both sides through recirculation doors 5 and apertures 10into said odd chanels 4, thus delaying the combustion process andcontributing to an elongation of the flame throughout the height of thevertical channel.

It is obvious that the number of recirculation channels in theadditional partitions 8 may be different.

The combustion process is controlled in firing channels through peepchannels 12 provided in the roof 13 of the coke ovens.

The present invention is not limited by its exemplary embodiment thusdescribed, and there may be conceived modifications thereof which do notdepart from the spirit and scope of the invention. a

What is claimed is:

1. A battery of coke ovens comprising a plurality of horizontal cokingchambers; firing hollow members disposed on both sides of said cokingchambers and provided with vertical firing channels; partitions providedwith communicating doors in the upper and lower por- 10 tions thereof,separating said vertical firing channels into pairs, the vertical firingchannels in a pair operating alternatively as firing and exhaustchannels, respectively; and hollow partitions separating each pair ofsaid vertical channels from an adjacent pair, each additional hollowpartition having at least two vertical recirculation channels withopenings at the top and bottom of said additional partition, one of thetwo vertical recirculation channels disposed in each hollow partitionbeing connected by the top and bottom openings thereof with a verticalfiring channel of one adjacent pair, while the other verticalrecirculation channel disposed in the same hollow partition is connectedby the top and bottom openings thereof with a vertical firing channel ofthe adjacent pair of vertical firing channels.

References Cited UNITED STATES PATENTS 2,268,483 12/1941 Hilgenstock202-139 3,419,475 12/1968 Tucker et a1. 202143 FOREIGN PATENTS 237,2827/ 1925 Great Britain. 613,606 '5/ 1935 Germany. 736,762 9/ 1932 France.800,010 6/ 1936 France.

WILBUR L. BASCOMB, JR., Primary Examiner D. EDWARDS, Assistant ExaminerUS. Cl. X.R. 202-143

